Radiation-induced polymerization of 3-hexylthiophene in oxygen-free and oxygen-saturated dichloromethane solvent

As alternative radiolytic approach, the synthesis of P3HT was made possible thanks to oxidation 3HT monomers by chloromethyl and dichloromethyl radicals or their corresponding peroxyl in situ produced dichloromethane solvent radiolysis. Under two different experimental conditions, oxygen-free solution oxygen-saturated solution, polymers, “P3HTN2” “P3HTO2” respectively, were successfully synthesized. Both materials discerned several analytical spectroscopic techniques. UV–Vis absorption spectroscopy results showed that yield is higher under O2 atmosphere. Indeed, a dose 75 kGy needed polymerize 10 mM N2 atmosphere, meanwhile 35 sufficient same amount O2. The average molecular weight P3HTO2was found than P3HTN2 as revealed SEC chromatography analysis. Also, P3HTO2exhibits better thermal stability P3HTN2. ATR-FTIR specific presence into P3HTO2 polymers some functional groups such carbonyl, hydroxyl carboxyl moieties, which clearly explains difference between morphological structures highlighted cryo-TEM, SEM AFM microscopies. Finally, both radio-synthesized characterized remarkably significant conductive, electronic optical properties.